2nd Gen - DIY - Do It Yourself / Tech Tips
Year: 2007
Engine: 4.0L V6
Mileage: 93,000
My service engine light recently came on, a bit after I noticed that my truck was idling erratically. So I pulled out my code reader and got a P0171 code (System too lean bank 1). After some further exploration, my initial thoughts are a faulty...